NASA NTRS · 19710000012
Welded polypropylene liners for large descaling tanks
Abstract
Liners for nitric and hydrofluoric acid tanks show no sign of deterioration after 18 months of continuous use. Each side of each edge of the polypropylene sheets is chamfered, and sheets are welded from both sides with polypropylene filler rod and a special hot-air welding torch.
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Abel, H. P.. 1971-01-01. Welded polypropylene liners for large descaling tanks. https://ntrs.nasa.gov/citations/19710000012
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